: : I am remodeling a bathroom and I need to install a toilet flange on the existing cast iron waste pipe. : The existing pipe had the original flange cut off at floor level by a plumber. The remaining pipe looks : to be 4 inches in diameter.

: I looked at different plumbing supply stores but it was not clear how I would attach a new flange: to the existing pipe or even what type of flange to use.

: I heard something about plumbers using molten lead to make this type connection but I have not found: any information regarding this.